What are the 3 elements of single phase power? - answerhot
neutral
ground
What are the three elements of 3 phase power? - answerthree hots
one neutral
one ground
What is a ground loop? - answerWhen voltage moves back and forth between ground
via a signal carrying line
What do ground loops cause? - answer60 Hz hum
How do you fix a ground loop? - answerDI box and ground loop switch
What colors are the wires in an xlr cable? - answerground/shield = green
positive/hot = red
negative/cold = black
What colors are the wires in a US outlet? - answerneutral = white
hot = black
ground = green
What do +4dbu and -10dbu represent? - answercommon line level
how much must the resistance of the mic pre be to function at optimal level? - answerIt
must be 10x the mic's output impedance
What is +4dBU in dBV? - answer1.2 dBV
What is -10 dBU in dBV? - answer0.3 dBV
What kind of splitters lose mic signal when they split? - answerdigital splitters
When do pre-fader splitters split? - answerbefore the fader
What happens every time you add a console to an analog split? - answerThe signal to
each console decreases
, What is a VOM and what does it do? - answerVolt Ohm Meter
It measures AC and DC current
What are the four steps to get any channel to any bus? - answer1. bring mic pre to 0dB
2. bring channel fader to 0 dB
3. Bus it
4. Bus fader to 0dB
What do power amps do? - answerBring line level to speaker level
What do pre fader listens do? - answersolos a channel so that the engineer can check
its level with headphones
What do after fader listens do? - answersolo a bus so they can check the level with
headphones
What does a channel EQ do? - answerAdjusts frequency levels to make the channel
sound good
What do 30 band EQs do? - answerTune the speakers to the room
What level do passive crossovers work at? - answerSpeaker level
Do passive crossovers come before or after amps? - answerafter amps
Do passive crossovers create insertion loss? - answerYes
Do passive crossovers have fixed points? - answerYes
What do low pass filter coils do? - answerblock the highs in passive crossovers
What do high pass filter coils do? - answerblock the lows in passive crossovers
What is the crossover point for most passive crossovers? - answer200Hz
What is the function of a crossover? - answerdivide input signal (at line or speaker level)
into two or more discrete band passes
What level do active crossovers work at? - answerline level
How many crossover points do active crossovers have? - answerIt is variable (but
typically 3)
What type of power do active crossovers require? - answerAC power
Do active crossovers have insertion loss? - answerNo
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Dreamer252. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.